doc: add deprecation note to README (#54)

Author: BethGriggs

Diff for: README.md

@@ -1,9 +1,4 @@
-# appmetrics-zipkin
-<p align=center>
-<a href='http://CloudNativeJS.io/'><img src='https://img.shields.io/badge/homepage-CloudNativeJS-blue.svg'></a>
-<a href='http://github.com/CloudNativeJS/ModuleLTS'><img src='https://img.shields.io/badge/Module%20LTS-Adopted-brightgreen.svg?style=flat' alt='Module LTS Adopted' /></a> 
-<a href='http://ibm.biz/node-support'><img src='https://img.shields.io/badge/Support-IBM%20Frameworks-brightgreen.svg?style=flat' alt='IBM Support' /></a>   
-</p>
+# The `appmetrics-zipkin` module is deprecated.
 
 appmetrics-zipkin provides [Zipkin](https://github.com/openzipkin/zipkin) instrumentation of Node.js applications using a single line: `require('appmetrics-zipkin')`.